#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
int main()
{
	/*char* p = NULL;
	if (NULL == p)
	{
		printf('2');
	}*/
	/*int input = 0;
	scanf("%d", &input);
	switch (input)
	{
	case 1:
		printf("xingqiyi");
		break;
	case 2:
		printf("xingqier");
		break;
	case 3:
		printf("xingqisan");
		break;
	case 4:
	}*/
	/*char arr[10] = { 0 };
	printf("%d\n", sizeof(arr));*/
	return 0;
}